HDS 125L Submersible Dredging Pump Specifications

78 KW
Power Output (106 HP)
200mm
Discharge Size (8 inch)
550 m³/h
Capacity (2,420 GPM)
22 m
Head (72 feet)
27% Cr
Chrome Casting

HDS 125L Submersible Dredging Pump - Complete Technical Specifications

The HDS 125L is a professional-grade submersible dredging pump manufactured by HDS Belgium (Hydraulic Dredging Systems). This heavy-duty pump delivers 78 kilowatts (106 horsepower) with a 200 millimeter (8 inch) discharge size, capable of pumping 500 to 550 cubic meters per hour (2,200–2,420 gallons per minute) with a head range of 16 to 22 meters (52–72 feet). The "L" designation indicates a larger impeller width (80mm vs 70mm on the HDS 125), optimized for maximum flow volume at the same power output.

Key Features and Construction

Superior wear resistance with 27% high-chrome casting impeller and wear plates hardened to 62 Rockwell C (HRC). Double seal cartridge protection in oil bath. Continuous duty rating at low speeds. Impeller width 80mm (3.15 in) with 60mm (2.4 in) diameter strainer. Tempered stainless steel shaft AISI T-431 DIN 1-4057, superior to 39NiCrMo3 for seawater applications. Excavator mounting pads for fast integration with dredging equipment.

Technical Specifications

  • Power Output: 78 KW (106 HP)
  • Discharge Size: 200mm (8 inch)
  • Capacity Range: 500-550 m³/h (2,200–2,420 GPM)
  • Head Range: 16-22 meters (52–72 feet)
  • RPM Range: 1050-1200 RPM
  • Operating Pressure: 270-300 Bar (3,915–4,350 PSI)
  • Required Oil Flow: 140-160 L/min (37–42 GPM)
  • Torque: 2 Nm/BAR (1.22 lb-in/PSI)
  • Motor Displacement: 124.8cc (7.62 cubic inches)
  • Maximum Oil Pressure: 430 BAR (6,235 PSI)
  • Pump Weight: 830 KG (1,830 lbs)
  • Impeller Width: 80mm (3.15 in) with 60mm (2.4 in) strainer
  • Wear Parts: 27% Chrome Casting, 62 HRC hardness (EN-GX260Cr27)
  • Shaft Sleeve: Diamix with Nitrile and Teflon seals
  • Paint: 2C Industrial Paint
  • Continuous duty rating at low speeds

HDS 125L vs HDS 125 Comparison

The HDS 125L shares the same 78 KW (106 HP) power output and hydraulic motor as the HDS 125, but features a wider 80mm impeller (vs 70mm) and 8-inch only discharge, delivering significantly higher flow: 550 m³/h vs 450 m³/h. The trade-off is a lower maximum head of 22m vs 28m. The 125L is the preferred choice when maximum volume throughput is the priority over pumping distance or elevation.

Mounting and Integration

Threaded fixations on both sides of pump casing for jetting ring or dredging cutter heads. Threaded fixations on motor housing for all types of lifting frames, rotating shafts, and horizontal or vertical ladder arms. Compatible with excavator cutter heads and mounting pads. Pump can be dismantled without removing excavator cutter heads.

Applications

Suitable for high-volume mining operations, sand and gravel extraction (up to 4mm grain size), large-scale dredging projects, harbor maintenance, construction excavation, and environmental remediation. Designed for severe conditions including heavy mud, clay, silt, and abrasive materials. Pumps coarse sand through PE-pipes (150, 200, 250mm diameter) up to 500 meters distance.

Manufacturer Contact

HDS Belgium (Hydraulic Dredging Systems), Steenweg Op Waarloos 63A Unit 13, 2840 Rumst, Belgium. Phone: +32-494-87-15-74. Email: [email protected]. Website: www.hdsbelgium.com

​⚠️Important Informations before choosing the right dredging pump :
​- Pumps designed for 1450 RPM - Thus higher speed results to higher wear of the wear plates, impeller, casing and agitator.
- Higher RPM results in higher capacity and head.
- To avoid higher wear when pumping abrasive sand RPM should be limited to recomended speed of 1150~1200 RPM.
- Silt and mud may be pumped at higher RPM, because it is less abrasive.​
​- Our performance curves are based on practical duty points for pumping coarse sand up to 4 mm grain size, providing reliable and realistic expectations in the field.
- Pumping sand through PE-pipes diameter 150, 200, 250mm. Distance up to max. 500 meters.
- There are similar dredging pumps from other manufacturer capable to pump dust of 0,1mm over a distance of 3000 meter.
- Note : Every water pump can pump dust of 0,1mm over a distance of 3000 meter.

The HDS 125L heavy-duty submersible dredge pump delivers 78 kW (106 HP) output and accommodates 8 inch discharge. Designed for extreme conditions in sand, gravel, clay and mud, it combines durability with easy maintenance.
       Versatile Mounting Design
​
  • Engineered for fast setup and seamless integration with your dredging equipment.
  • Threaded fixations on both side of the pump casing allowing fixation of jetting ring or dredging cutter heads-excavators for hard soil and clay or mixing to fluidify heavy mud with low water content.
  • Threaded fixations on both side of the motor housing allowing to fix on :
  • All types of lifting frames
  • Rotating shafts to fix on ladder arm.
  • Horizontal or vertical ladder arm to avoid spinning of the unit or laying  down on the bottom. 
  • Allowing the fixation of the discharge hose, power hoses or jetting hose.
  • Makes it operator friendly and allows the operator to focus more on production instead of caring about the surroundings and not cooperating floating hoses.
​​                          Reliable
​
  • Designed to minimize vibrations and withstand heavy-duty operating conditions, the pump is equipped with bearings positioned close to the impeller and an agitator with three robust blades for superior impact resistance.
  • Shaft tempered stainless AISI T-431 DIN 1-4057 - Better than 39NiCrMo3 For Sea Water Application​.
  • The shaft sleeve is made of Diamix and features both Nitrile and Teflon seals.
  • Our wear plates and impellers are made of white cast iron with 27% chromium content and a hardness of 62 HRC. EN-GX260Cr27 provides exceptional wear resistance under extreme abrasion conditions in dredging, slurry pump applications, and mining. It outperforms EN-GJN-HV600 (XCr18), offering extended service life and reduced maintenance requirements.
Easy to Maintain and Cost-Effective to Repair
  • Extraction bolts for easy dismantling by repair or overhaul.
  • Casted parts in over-sized thickness, unbreakable makes dismantling and reassembling possible in record times.
  • Pumps can be dismantled without removing the Excavators-Cutter heads.

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